Gain ratio for SS???

Zilla said:

Yep, I'm assimilating, acclimating, whatever to SS riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Sheldon's equation is Radius ratio = wheel radius / crank
length Gain ratio = radius ratio x front(teeth) /
rear(teeth)

Wheel = 26" Cranks = 6.75" ...therefore radius ration = 13
/ 6.75 = 1.93

Front cog = 42 t rear cog = ???

42... bwhahahahaha

What is this a DH SS?!?!?
--
Slacker

"Zilla" <[email hidden]> wrote in message
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Quoted message said:

Yep, I'm assimilating, acclimating, whatever to SS riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Sheldon's equation is Radius ratio = wheel radius / crank
length Gain ratio = radius ratio x front(teeth) /
rear(teeth)

Wheel = 26" Cranks = 6.75" ...therefore radius ration = 13
/ 6.75 = 1.93

Front cog = 42 t rear cog = ???

How about a 34x17, for a 2:1 ratio? Not that I know much
about this yet, but I think you shoot for a 2:1. Don't think
you want to go that big up front for whatever reason, but I
bet we find out.

mojo deluxe said:

"Zilla" <[email hidden]> wrote in message
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Quoted message said:

Yep, I'm assimilating, acclimating, whatever to SS
riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Sheldon's equation is Radius ratio = wheel radius / crank
length Gain ratio = radius ratio x front(teeth) /
rear(teeth)

Wheel = 26" Cranks = 6.75" ...therefore radius ration =
13 / 6.75 = 1.93

Front cog = 42 t rear cog = ???

How about a 34x17, for a 2:1 ratio? Not that I know much
about this yet, but I think you shoot for a 2:1. Don't
think you want to go that big up front for whatever
reason, but I bet we find out.

Most (all?) I've seen have a 32 up front. a 42 might work if
you can put a 21 in the back, but it will probably be easier
to get the more commonly used sizes. I think 2:1 is a god
way to start if it's not super steep where you are. I run
32:17 but there are some stout climbs around here.

Matt

Slacker said:

Quoted message said:

Front cog = 42 t rear cog = ???

42... bwhahahahaha

What is this a DH SS?!?!?
--
Slacker

WTF? I run a 42/15, and I'm old and weak. . .

--
Ted Bennett Portland OR

Ted Bennett said:

Slacker said:

Quoted message said:

Front cog = 42 t rear cog = ???

42... bwhahahahaha

What is this a DH SS?!?!?

WTF? I run a 42/15, and I'm old and weak. . .

This thread is cross posted to alt.mountain-bike, so I
believe people are assuming the OP is talking about a
mountain bike application, even though he didn't explicitly
state as much.

I have a 42/14 on my (road) fixie at the moment, and it's
working out pretty well.

--
Benjamin Lewis

I regret to say that we of the FBI are powerless to act in
cases of oral-genital intimacy, unless it has in some way
obstructed interstate commerce. -- J. Edgar Hoover

Slacker said:

Zilla said:

Yep, I'm assimilating, acclimating, whatever to SS
riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Sheldon's equation is Radius ratio = wheel radius / crank
length Gain ratio = radius ratio x front(teeth) /
rear(teeth)

Wheel = 26" Cranks = 6.75" ...therefore radius ration =
13 / 6.75 = 1.93

Front cog = 42 t rear cog = ???

42... bwhahahahaha

What is this a DH SS?!?!?
--
Slacker

In engineering school I learned there are no stupid
questions, an advice I hold true. Apparently that does NOT
hold true for answers.

Incidentally that was a typo. I plan to use an existing
middle ring, which is a 32t.

--
- Zilla Cary, NC (Remove XSPAM)

Zilla said:

Incidentally that was a typo. I plan to use an existing
middle ring, which is a 32t.

I run a 32-16 on my Giant, and so far it's worked out
perfectly. my cranks are 175mm.

--
6/15/2004
7:26 PM [GMT-8]

"Zilla" <[email hidden]> schreef in bericht
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Quoted message said:

Front cog = 42 t rear cog = ???

--
- Zilla Cary, NC (Remove XSPAM)

2:1 is common, so in this case use a 21

Zilla said:

Incidentally that was a typo. I plan to use an existing
middle ring, which is a 32t.

Start off with a straight 2:1 ratio. You can adjust it from
there should you be unhappy with the ratio.

Be warned, using a 32t ring that's just lying around could
cause you some trouble. Have a read of the first page here:
soulcraftbikes.comid63.htmOpen ↗ - specifically the
part about 'Straight cut cogs and chainrings only'.

--
a.m-b FAQ: j-harris.netambfaq.htmOpen ↗

b.bmx FAQ: t-online.debmx faq.htmOpen ↗

Zilla said:

Yep, I'm assimilating, acclimating, whatever to SS riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Optimal? I don't know. Where to start? Conventional
wisdom says...

Chainring/cog = 2 for off-road SS Chainring/cog = 2.6 for
on-road SS or fixie

Start there, and see where you end up.

--
Dave dvt at psu dot edu

"Zilla" <[email hidden]> wrote in message
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Quoted message said:

Yep, I'm assimilating, acclimating, whatever to SS riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Sheldon's equation is Radius ratio = wheel radius / crank
length Gain ratio = radius ratio x front(teeth) /
rear(teeth)

Wheel = 26" Cranks = 6.75" ...therefore radius ration = 13
/ 6.75 = 1.93

Front cog = 42 t rear cog = ???

--
- Zilla Cary, NC (Remove XSPAM)

I just started out too, riding in a hilly part of Virginia
(Blue Ridge mountains). I have found that I can get along
with a 32 x 18 on most hills (about the same as a 39 x 22),
and even a 32 x 16, although this is harder work. 32 x 18
top pedaling speed is about 27 km/h, while the 16 gives you
another 4-5 km/h on flat roads. Ultimately you should just
put on your 32 and try out some gears in the back until you
are happy!

Jan

"Zilla" <[email hidden]> wrote in message
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Quoted message said:

Yep, I'm assimilating, acclimating, whatever to SS riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Sheldon's equation is Radius ratio = wheel radius / crank
length Gain ratio = radius ratio x front(teeth) /
rear(teeth)

Wheel = 26" Cranks = 6.75" ...therefore radius ration = 13
/ 6.75 = 1.93

Front cog = 42 t rear cog = ???

I am running my SS as 32 X 18.

I am running my fixie/commuter as 48 X 16.

- CA-G

Can-Am Girls Kick Ass!

"Zilla" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Yep, I'm assimilating, acclimating, whatever to SS riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Sheldon's equation is Radius ratio = wheel radius / crank
length Gain ratio = radius ratio x front(teeth) /
rear(teeth)

Wheel = 26" Cranks = 6.75" ...therefore radius ration = 13
/ 6.75 = 1.93

Front cog = 42 t rear cog = ???

Yeah fat building munching lizard guy creature thing - I'd
go along with the others and say just bung on the 32 up
front, start 16 and take it from there, up or down
depending.

Oh, and watch those knees if ya ever had trouble with them
before, FFS - mine had given me some grief in the past, but
after commuting SS for around a year or two, maybe (only!) 3
miles each way, only one or two steep hills in there,
they're rather trashed (I _HAVE_ to wear knee supports now
whenever riding gearies, or they get real painful and I
struggle even to walk for a few days...).

Shaun aRe - But don't let me put you off! Heh... ',;~}~

"bomba" <[email hidden]> wrote in message
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Quoted message said:

Zilla said:

Incidentally that was a typo. I plan to use an existing
middle ring, which is a 32t.

Start off with a straight 2:1 ratio. You can adjust it
from there should you be unhappy with the ratio.

Be warned, using a 32t ring that's just lying around could
cause you some trouble. Have a read of the first page
here: soulcraftbikes.comid63.htmOpen ↗ -
specifically the part about 'Straight cut cogs and
chainrings only'.

Yeah, but I pulled it off OK, using an old [censored] Man no
freehub, the 26T cog left in place, home made spacers, and a
32 middle ring - chain never did come off, however, I seem
to have permanently FU my knees, so to save your knees,
maybe you should go with straight cut teeth only...

Shaun aRe ',;~}~

Zilla said:

Yep, I'm assimilating, acclimating, whatever to SS riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Sheldon's equation is Radius ratio = wheel radius / crank
length Gain ratio = radius ratio x front(teeth) /
rear(teeth)

Wheel = 26" Cranks = 6.75" ...therefore radius ration = 13
/ 6.75 = 1.93

Front cog = 42 t rear cog = ???

Try 18T or 19T. I spend most of the time on the 17T and 19T
on my 26" wheeled tourer, with a 42T middle ring. If you
ride offroad you might want to go larger.

Slacker said:

42... bwhahahahaha

What is this a DH SS?!?!?

A lot of track bikes run 53T chainrings...

"Zilla" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

Yep, I'm assimilating, acclimating, whatever to SS riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Sheldon's equation is Radius ratio = wheel radius / crank
length Gain ratio = radius ratio x front(teeth) /
rear(teeth)

Wheel = 26" Cranks = 6.75" ...therefore radius ration = 13
/ 6.75 = 1.93

Front cog = 42 t rear cog = ???

Take it from someone who lived and rode in NC for many
years, run a 2:1.

JD 34x17 for 4 years

"Zilla" wrote

Quoted message said:

Yep, I'm assimilating, acclimating, whatever to SS riding.

From reading the replies to this, I think everyone
misunderstood the OP. By "SS", she meant "side saddle".

dvt said:

Zilla said:

Yep, I'm assimilating, acclimating, whatever to SS
riding.

What would be the "optimal" gain ratio for one
(me) starting to ride SS? IOW, what should I shoot for to
start with?

Optimal? I don't know. Where to start? Conventional
wisdom says...

Chainring/cog = 2 for off-road SS Chainring/cog = 2.6 for
on-road SS or fixie

Start there, and see where you end up.

--
Dave dvt at psu dot edu

Thanks! I don't have conventional wisdom! 🙂

--
- Zilla Cary, NC (Remove XSPAM)